While giving guidelines to her field interviewing staff, a researcher states, I want you to interview every tenth customer entering a K-Mart store at the following key sites. This is an example of ____ sampling.
a. judgment
b. quota
c. sequential
d. systematic
e. convenience
Question 2One of the major problems with mail surveys is nonresponse bias. In an effort to minimize this, a researcher decides to limit the sample to his personal friends from whom he is sure to get replies. This is an example of a:
a. probability sample.
b. nonprobability sample.
c. random sample.
d. sequential sample.
e. quota sample.
Question 3All of the following are probability sampling plans EXCEPT:
a. quota.
b. area.
c. cluster.
d. disproportionate stratified.
e. systematic.
Question 4Which of the following is a probability sample?
a. Quota sample
b. Convenience sample
c. Cluster sample
d. Judgment sample
e. Snowball sample
Question 5In probability samples, the probabilities of each element being included must be:
a. known.
b. nonzero.
c. equal.
d. known and equal.
e. known and nonzero.
Question 6The distinguishing feature of nonprobability sampling plans is that:
a. they allow an assessment of sampling error.
b. they are not as representative of the population as probability samples.
c. they involve personal judgment somewhere in the selection of sample elements.
d. there is only one basic type of nonprobability sample while there are several types of probability samples.
e. they tend to be more expensive than probability samples.
Question 7In order to define a population, the researcher needs to specify:
a. the geographic boundaries of the population.
b. which elements are not of interest.
c. the time period for the study.
d. Both a and b.
e. a, b, and c.
Question 8Which of the following is NOT a problem with using a phone book for a sampling frame?
a. Unlisted phone numbers.
b. Not all homes have phones.
c. Double counting homes with multiple phone numbers.
d. The phone book is always outdated.
e. All of the above are problems when sampling from phone books.
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